In the general case, the behavior of an object depends on its persistent state. For example, suppose the following line of code executes within the realm of entity manager.
一般情况下，对象的行为取决于其持久性状态。
2
The “colour line”, as he called it, remained “the most tragic and persistent social problem” the country faced.
如他所言，那道“肤色分界线”仍是横亘在这个国家面前的“一个最可悲也最顽固的社会问题”。
3
Additionally, to make these changes persistent, you can create or edit /etc/sysctl.conf and specify all of these settings, one on each line, in the form setting=value.